简而言之:
EC2集群:1个主3个从属
Spark版本:1.3.1
我希望使用选项spark.driver.allowMultipleContexts,一个上下文本地(仅限主)和一个集群(主服务器和从服务器).
我得到这个stacktrace错误(第29行是我调用初始化第二个sparkcontext的对象):
fr.entry.Main.main(Main.scala)
at org.apache.spark.SparkContext$$anonfun$assertNoOtherContextIsRunning$1$$anonfun$apply$10.apply(SparkContext.scala:1812)
at org.apache.spark.SparkContext$$anonfun$assertNoOtherContextIsRunning$1$$anonfun$apply$10.apply(SparkContext.scala:1808)
at scala.Option.foreach(Option.scala:236)
at org.apache.spark.SparkContext$$anonfun$assertNoOtherContextIsRunning$1.apply(SparkContext.scala:1808)
at org.apache.spark.SparkContext$$anonfun$assertNoOtherContextIsRunning$1.apply(SparkContext.scala:1795)
at scala.Option.foreach(Option.scala:236)
at org.apache.spark.SparkContext$.assertNoOtherContextIsRunning(SparkContext.scala:1795)
at org.apache.spark.SparkContext$.setActiveContext(SparkContext.scala:1847)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:1754)
at fr.entry.cluster$.<init>(Main.scala:79)
at fr.entry.cluster$.<clinit>(Main.scala)
at fr.entry.Main$delayedInit$body.apply(Main.scala:29)
at scala.Function0$class.apply$mcV$sp(Function0.scala:40)
at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
at scala.App$$anonfun$main$1.apply(App.scala:71)
at scala.App$$anonfun$main$1.apply(App.scala:71)
at scala.collection.immutable.List.foreach(List.scala:318)
at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:32)
at scala.App$class.main(App.scala:71)
at fr.entry.Main$.main(Main.scala:14)
at fr.entry.Main.main(Main.scala)
15/09/28 15:33:30 INFO AppClient$ClientActor: Executor updated: app- 20150928153330-0036/2 is now LOADING
15/09/28 15:33:30 INFO AppClient$ClientActor: Executor updated: app- 20150928153330-0036/0 is now RUNNING
15/09/28 15:33:30 INFO AppClient$ClientActor: Executor updated: app-20150928153330-0036/1 …Run Code Online (Sandbox Code Playgroud) 我很好奇,我在文档中读到:
容量是哈希表中的桶数...负载因子是在自动增加容量之前允许哈希表获取的完整程度的度量.当哈希表中的条目数超过加载因子和当前容量的乘积时,哈希表将被重新哈希(即,重建内部数据结构),以便哈希表具有大约两倍的桶数.
有没有办法在t时刻知道hashmap的容量(桶的数量)?
我想在网上看到我的工作.
我使用createLocalEnvironmentWithWebUI,代码在IDE中运行良好,但无法在http:// localhost:8081 /#/ overview中看到我的工作
val conf: Configuration = new Configuration()
import org.apache.flink.configuration.ConfigConstants
conf.setBoolean(ConfigConstants.LOCAL_START_WEBSERVER, true)
val env = StreamExecutionEnvironment.createLocalEnvironmentWithWebUI(conf)
env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime)
val rides = env.addSource(
new TaxiRideSource("nycTaxiRides.gz", 1,100))//60, 600))
val filteredRides = rides
.filter(r => GeoUtils.isInNYC(r.startLon, r.startLat) && GeoUtils.isInNYC(r.endLon, r.endLat))
.map(r => (r.passengerCnt, 1))
.keyBy(_._1)
.window(TumblingTimeWindows.of(Time.seconds(5)))
.sum(1)
.map(r => (r._1.toString+"test", r._2))
filteredRides.print()
env.execute("Taxi Ride Cleansing")
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我需要设置其他东西吗?
我想复制多行的第一个单词.
代码示例:
apiKey := fmt.Sprintf("&apiKey=%s", args.ApiKey)
maxCount := fmt.Sprintf("&maxCount=%d", args.MaxCount)
id := fmt.Sprintf("&id=%s", args.Id)
userid := fmt.Sprintf("&userid=%s", args.Userid)
requestFields := fmt.Sprintf("&requestFields=%s", args.RequestFields)
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我想在我的剪贴板中有这个:
apiKey
maxCount
id
userid
requestFields
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我阅读了Spark 网站上的Metrics部分.我希望在wordcount示例上尝试它,我无法使它工作.
spark/conf/metrics.properties:
# Enable CsvSink for all instances
*.sink.csv.class=org.apache.spark.metrics.sink.CsvSink
# Polling period for CsvSink
*.sink.csv.period=1
*.sink.csv.unit=seconds
# Polling directory for CsvSink
*.sink.csv.directory=/home/spark/Documents/test/
# Worker instance overlap polling period
worker.sink.csv.period=1
worker.sink.csv.unit=seconds
# Enable jvm source for instance master, worker, driver and executor
master.source.jvm.class=org.apache.spark.metrics.source.JvmSource
worker.source.jvm.class=org.apache.spark.metrics.source.JvmSource
driver.source.jvm.class=org.apache.spark.metrics.source.JvmSource
executor.source.jvm.class=org.apache.spark.metrics.source.JvmSource
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我在本地运行我的应用程序,如文档中所示:
$SPARK_HOME/bin/spark-submit --class "SimpleApp" --master local[4] target/scala-2.10/simple-project_2.10-1.0.jar
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我检查了/ home/spark/Documents/test /它是空的.
我错过了什么?
贝壳:
$SPARK_HOME/bin/spark-submit --class "SimpleApp" --master local[4] --conf spark.metrics.conf=/home/spark/development/spark/conf/metrics.properties target/scala-2.10/simple-project_2.10-1.0.jar
Spark assembly has been built with Hive, including Datanucleus jars on classpath
Using …Run Code Online (Sandbox Code Playgroud) 我正在尝试在Android APP中的服务器上发出HTTPGet请求,但是当我更改字符串中的httpresponse时,字符串为0长度.
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet("http://"+server+path+"?assets="+URLEncoder.encode(query, "US-ASCII")+"<="+localTime+"&to="+timeOffset);
HttpResponse response = httpclient.execute(httpget);
System.out.println("Status"+ response.getStatusLine());
System.out.println("Length "+org.apache.http.util.EntityUtils.toString(response.getEntity()).length());
return org.apache.http.util.EntityUtils.toString(response.getEntity());
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Catlog:
I/System.out(22344): StatusHTTP/1.1 200 OK
I/System.out(21737): Length 0
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uri很好,当我在浏览器中复制/浏览它时,我得到如下结果:
{"ads":[{"i"...],"pxs":{}}
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有谁知道为什么我的字符串是空的?
Udpate 1:
long localTime = System.currentTimeMillis();
Date date = new Date();
@SuppressWarnings("deprecation")
int timeOffset = date.getTimezoneOffset ();
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更新2:
我添加了这一行:
httpget.setHeader("User-Agent", "Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)");
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现在我有这个错误:
目录下载
E/AndroidRuntime(23584): FATAL EXCEPTION: AsyncTask #2
E/AndroidRuntime(23584): java.lang.RuntimeException: An error occured while executing doInBackground()
E/AndroidRuntime(23584): at …Run Code Online (Sandbox Code Playgroud) 我阅读了spark和hbase的文档:
http://hbase.apache.org/book.html#spark
我可以看到HBase的最后一个稳定版本是1.1.2,但我也看到apidocs版本为2.0.0-SNAPSHOT,并且spark的apidoc是空的.
我很困惑,为什么apidocs和HBase版本不匹配?
我的目标是使用Spark和HBase(bulkGet,bulkPut..etc).我如何知道这些功能已经在哪个HBase版本中实现?
如果有人对此有补充文件,那就太棒了.
我在hbase-0.98.13-hadoop1上.
错误 :
Rendezvous of RPC that terminated with: status = StatusCode.UNAVAILABLE details = "Socket closed" debug_error_string = "{"created":"@1576780304.349820911","description":"Error received from peer ipv4:104.155.6.79:443","file":"src/core/lib/surface/call.cc","file_line":1046,"grpc_message":"Socket closed","grpc_status":14}
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该错误的文档是这样说的:The service is currently unavailable. This is most likely a transient condition, which can be corrected by retrying with a backoff.
我发现可用的退避GRPC ARGS是:
grpc.initial_reconnect_backoff_ms
grpc.max_reconnect_backoff_ms
grpc.min_reconnect_backoff_ms
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这些参数似乎默认具有这些值
#define GRPC_SUBCHANNEL_INITIAL_CONNECT_BACKOFF_SECONDS 1
#define GRPC_SUBCHANNEL_RECONNECT_MIN_TIMEOUT_SECONDS 20
#define GRPC_SUBCHANNEL_RECONNECT_MAX_BACKOFF_SECONDS 120
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你怎么知道退避会重试多少次?它是否链接到“grpc.enable_retries”?因为文档提到“透明重试”,我不确定它是否与退避选项相关。
处理代码 14 错误的正确方法是什么?
我的项目中有3个活动,我想仅在一个活动中删除/隐藏操作栏中的searchView.
我试过searchView.setVisibility(View.GONE); 但仍然有可点击的图标.
main_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:id="@+id/menu_search"
android:title="@string/menu_search"
android:icon="@drawable/ic_menu_search"
android:showAsAction="ifRoom|collapseActionView"
android:actionViewClass="android.widget.SearchView" />
<item
android:id="@+id/item_clear_memory_cache"
android:title="@string/menu_item_clear_memory_cache"/>
<item
android:id="@+id/item_clear_disc_cache"
android:title="@string/menu_item_clear_disc_cache"/>
</menu>
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select IF(type='view', count(*), 0), IF(type='click', count(*), 0)
from ad_events
where year=2013 and month=01 and day=18 and (hour=01 or hour=02)
group by type
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结果:
_c0 _c1
0 0 0
1 0 0
2 0 1368
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
8 277917 0
9 0 0
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反正有没有像这样的结果?:
_c0 _c1
0 277917 1368
Run Code Online (Sandbox Code Playgroud) 我的应用程序使用 Mithril.js 和 Play Framework。
我想知道是否有一种(好的)方法可以在秘银和游戏之间划分我的应用程序。我想让 play 呈现一个 login.html,这个 login.html 将只包含我的 mithril.js 组件(login.js)的导入。如果登录成功,我想将我的应用程序重定向到另一个 html 页面。此页面将包含我所有秘银组件的所有导入。
所以我的应用程序在播放框架方面只有两个 html 页面,一个只导入一个秘银组件,另一个导入所有其他组件(仅在检查凭据时)。
播放路由器:
GET / 控制器.Index.index
播放控制器:
def index = Action { Ok(views.html.login()) }
登录.html
<!DOCTYPE html>
<html lang="en">
<head>
<title>IHM</title>
StylesSheet import..
</head>
<body id="app" class="body">
<script src="https://cdnjs.cloudflare.com/ajax/libs/mithril/0.2.2-rc.1/mithril.min.js"></script>
<script src="@routes.Assets.versioned("javascripts/claravista/login.js")" type="text/javascript"></script>
<script type="text/javascript">
m.route.mode = "pathname";
m.route(document.getElementById('app'), "/", {
"/": login,
});
</script>
</body>
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m.request({method: "PUT", url: "/check-user", data : login.user }).then(returnCall);
Case Credentials false : 再问一次(我已经做了这部分)
Case Credentials true:重定向到另一个 html …
apache-spark ×3
java ×3
android ×2
scala ×2
apache-flink ×1
grpc-python ×1
hashmap ×1
hbase ×1
hive ×1
hiveql ×1
javascript ×1
metrics ×1
mithril.js ×1
sockets ×1
vim ×1